EP0264877A2 - Dispositif pour séparer et retenir des hydrocarbures non dissous de l'eau - Google Patents

Dispositif pour séparer et retenir des hydrocarbures non dissous de l'eau Download PDF

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Publication number
EP0264877A2
EP0264877A2 EP87115252A EP87115252A EP0264877A2 EP 0264877 A2 EP0264877 A2 EP 0264877A2 EP 87115252 A EP87115252 A EP 87115252A EP 87115252 A EP87115252 A EP 87115252A EP 0264877 A2 EP0264877 A2 EP 0264877A2
Authority
EP
European Patent Office
Prior art keywords
barrier
container
water
polyester fibers
hydrocarbons
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Withdrawn
Application number
EP87115252A
Other languages
German (de)
English (en)
Other versions
EP0264877A3 (fr
Inventor
Ernst Reinhard
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Friwa Zeiss-Neutra Umwelttechnik AG
Original Assignee
Friwa Zeiss-Neutra Umwelttechnik AG
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Friwa Zeiss-Neutra Umwelttechnik AG filed Critical Friwa Zeiss-Neutra Umwelttechnik AG
Publication of EP0264877A2 publication Critical patent/EP0264877A2/fr
Publication of EP0264877A3 publication Critical patent/EP0264877A3/fr
Withdrawn legal-status Critical Current

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Classifications

    • E—FIXED CONSTRUCTIONS
    • E03—WATER SUPPLY; SEWERAGE
    • E03F—SEWERS; CESSPOOLS
    • E03F5/00—Sewerage structures
    • E03F5/14—Devices for separating liquid or solid substances from sewage, e.g. sand or sludge traps, rakes or grates
    • E03F5/16—Devices for separating oil, water or grease from sewage in drains leading to the main sewer
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01D—SEPARATION
    • B01D17/00—Separation of liquids, not provided for elsewhere, e.g. by thermal diffusion
    • B01D17/02—Separation of non-miscible liquids
    • B01D17/04—Breaking emulsions
    • B01D17/045—Breaking emulsions with coalescers

Definitions

  • the invention relates to a device for separating and retaining undissolved hydrocarbons from water, comprising a container which has an inlet for the hydrocarbon-water mixture on one side of the container and an outlet for the water on the opposite side of the container, and in between Inlet and outlet are arranged a barrier perpendicular to the direction of flow which passes through the container and is made of a material which effects the deposition by coalescence.
  • So-called heavy-weight oil separators for separating oil from waste water in commercial operations are known, in which, however, the effectiveness of the separation is very unsatisfactory because of the relatively high flow rate of the oil-water mixture inside the container and the consequent turbulence.
  • the flow in the tank In order for the undissolved hydrocarbons to rise due to the lower specific weight, the flow in the tank must be extremely slowed down.
  • the value of the hydrocarbons still tolerated in the draining water must be reduced to below 10 mg per liter.
  • barriers in the container which consist of a material with which an effect called coalescence is achieved, which means that smaller oil droplets combine to form larger drops and then climb up.
  • ten barriers required a relatively large proportion of the volume of the container, since several barriers had to be connected in series in the direction of flow in order to achieve the necessary separation effect with the material used, from which the barrier consists, in which no more than 10 mg of hydrocarbons per Liters are contained in the waste water.
  • the aim of the present invention is to fall below this value of the hydrocarbon content in the water even more clearly and to achieve this with a material which is more effective in terms of efficiency and which occupies a much smaller space within the container, so that the device can be simplified in construction and is inexpensive Benefit ratio can be achieved.
  • this goal is achieved in that the barrier consists of polyester fibers.
  • the polyester fibers are preferably held in the form of a mat in a cage which is interchangeably arranged in the container.
  • a filter barrier made of polyethylene shavings can also be arranged upstream of the barrier made of polyester fibers in order to retain floating solids serves and thus protects the downstream barrier made of polyester fibers.
  • the device has a standing cylindrical container 1, which has a flat bottom 2 and is closed by a cover 3 consisting of several parts.
  • An inlet pipe 4 and an outlet pipe 5 are connected to the opposite sides of the container 1.
  • a baffle 6 extending only transversely through this in the upper part of the container 1 separates a catch chamber 7 located adjacent to the inlet pipe 4 from the rest of the container interior. The mixture of water and undissolved hydrocarbons flowing into the container 1 initially flows into this preliminary space 7.
  • a further downward-extending baffle 8 extends through the container 1 and separates an outlet space 9 from the rest of the container interior.
  • the container 1 is divided in the middle between the inlet side and the outlet side by a first barrier 10 and a second barrier 11, which is transverse to the direction of flow between the inlet side and the outlet side and the container 1 are arranged to penetrate vertically.
  • the barrier 11 consists of polyester fibers and is the essential barrier in which the hydrocarbons are separated due to the coalescence effect by combining smaller to larger drops which rise upwards.
  • the upstream and the additional barrier 10 to protect it contains polyethylene shavings and are used to retain suspended solids and thus to protect the downstream barrier 11. This barrier would also be sufficient to have the task 10 according to the invention may also be absent but the advantage that the barrier 11 fulfills its intended function longer.
  • polyester fibers used for the barrier 11 are very resistant to mineral acids, sulfuric acid and hydrochloric acid at a temperature of 20 - 40 ° C.
  • the material is also resistant to alkalis and bacteria and fungi, but particularly good to all types of hydrocarbons such as petrol, etc.
  • another container 20 of the same design is arranged, which serves as a coarse separator and also has diving walls 21 and 22, but does not contain any barriers.
  • the water containing the hydrocarbons flows through a line 23 into the container 20 and leaves this container via the inlet pipe 4 of the container 1 which forms the connection between the two containers.
  • the water freed from the hydrocarbons leaves the container 1 via a pipe 24 and arrives into a control shaft, not shown in the drawing, from which it is led into the sewage system or into a collecting basin.

Landscapes

  • Health & Medical Sciences (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Engineering & Computer Science (AREA)
  • Hydrology & Water Resources (AREA)
  • Public Health (AREA)
  • Water Supply & Treatment (AREA)
  • Physics & Mathematics (AREA)
  • Thermal Sciences (AREA)
  • Chemical & Material Sciences (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • Removal Of Floating Material (AREA)
  • Extraction Or Liquid Replacement (AREA)
EP87115252A 1986-10-24 1987-10-19 Dispositif pour séparer et retenir des hydrocarbures non dissous de l'eau Withdrawn EP0264877A3 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
IT2213886 1986-10-24
IT22138/86A IT1197916B (it) 1986-10-24 1986-10-24 Dispositivo per la separazione e l'estrazione dall'acqua di idrocarburi in essa non disciolti

Publications (2)

Publication Number Publication Date
EP0264877A2 true EP0264877A2 (fr) 1988-04-27
EP0264877A3 EP0264877A3 (fr) 1988-11-02

Family

ID=11192056

Family Applications (1)

Application Number Title Priority Date Filing Date
EP87115252A Withdrawn EP0264877A3 (fr) 1986-10-24 1987-10-19 Dispositif pour séparer et retenir des hydrocarbures non dissous de l'eau

Country Status (3)

Country Link
EP (1) EP0264877A3 (fr)
DK (1) DK555587A (fr)
IT (1) IT1197916B (fr)

Cited By (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0319713A3 (en) * 1987-11-14 1990-02-14 Zeiss Betonwaren Gmbh Coalescence separator
DE3902155A1 (de) * 1989-01-25 1990-07-26 Zapf Werner Kg Abwasserreinigungsvorrichtung
AT398752B (de) * 1992-07-27 1995-01-25 Purator Umwelttechnik Gmbh Abscheider für leichtflüssigkeiten
AT398959B (de) * 1992-08-27 1995-02-27 Katzenberger Beton U Fertigtei Anlage zum abscheiden von leichtflüssigkeiten, insb. mineralölen
EP0699462A1 (fr) * 1994-09-03 1996-03-06 FILTERWERK MANN & HUMMEL GMBH Dispositif pour séparer des liquides de densités différentes
ES2164617A1 (es) * 2000-09-22 2002-02-16 Cabre Javier Martin Equipo separador de aguas hidrocarburadas.
GB2466698A (en) * 2008-12-16 2010-07-07 Polypipe Civils Ltd A filter apparatus
FR3069258A1 (fr) * 2017-07-21 2019-01-25 Christophe Carrette Dispositif de filtration des eaux pluviales

Family Cites Families (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3450632A (en) * 1967-05-03 1969-06-17 Chevron Res Method for simultaneously coalescing,filtering and removing oil traces from liquids and media for accomplishing the same
NO143369C (no) * 1974-11-26 1981-01-28 British Petroleum Co Apparat for separering av olje fra vann som er forurenset med olje.
FR2380054A1 (fr) * 1977-02-15 1978-09-08 Guiot Sa Ets Perfectionnements aux dispositifs de separation d'une phase aqueuse et d'une phase huileuse dispersees l'une dans l'autre
FR2448508A1 (fr) * 1979-02-08 1980-09-05 Elf France Procede de deshuilage des eaux
GB2052285A (en) * 1979-05-17 1981-01-28 British Petroleum Co Coalescer-filter
DE8535037U1 (de) * 1985-12-13 1986-03-06 Passavant-Werke AG & Co KG, 6209 Aarbergen Leichtflüssigkeitsabscheider

Cited By (10)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0319713A3 (en) * 1987-11-14 1990-02-14 Zeiss Betonwaren Gmbh Coalescence separator
DE3902155A1 (de) * 1989-01-25 1990-07-26 Zapf Werner Kg Abwasserreinigungsvorrichtung
AT398752B (de) * 1992-07-27 1995-01-25 Purator Umwelttechnik Gmbh Abscheider für leichtflüssigkeiten
AT398959B (de) * 1992-08-27 1995-02-27 Katzenberger Beton U Fertigtei Anlage zum abscheiden von leichtflüssigkeiten, insb. mineralölen
EP0699462A1 (fr) * 1994-09-03 1996-03-06 FILTERWERK MANN & HUMMEL GMBH Dispositif pour séparer des liquides de densités différentes
US5681462A (en) * 1994-09-03 1997-10-28 Filterwerk Mann & Hummel Gmbh Device for separating liquids of differing density
ES2164617A1 (es) * 2000-09-22 2002-02-16 Cabre Javier Martin Equipo separador de aguas hidrocarburadas.
GB2466698A (en) * 2008-12-16 2010-07-07 Polypipe Civils Ltd A filter apparatus
GB2466698B (en) * 2008-12-16 2013-03-13 Polypipe Civils Ltd A filter apparatus
FR3069258A1 (fr) * 2017-07-21 2019-01-25 Christophe Carrette Dispositif de filtration des eaux pluviales

Also Published As

Publication number Publication date
DK555587A (da) 1988-04-25
EP0264877A3 (fr) 1988-11-02
IT1197916B (it) 1988-12-21
IT8622138A0 (it) 1986-10-24
DK555587D0 (da) 1987-10-23

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